Adding Crypt library from http://phpseclib.sourceforge.net/

plugins/OStatus/extlib/Crypt/Random.php

@@ -0,0 +1,70 @@
+<?php
+/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
+
+/**
+ * Random Number Generator
+ *
+ * PHP versions 4 and 5
+ *
+ * Here's a short example of how to use this library:
+ * <code>
+ * <?php
+ *    include('Crypt/Random.php');
+ *
+ *    echo crypt_random();
+ * ?>
+ * </code>
+ *
+ * LICENSE: This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA  02111-1307  USA
+ *
+ * @category   Crypt
+ * @package    Crypt_Random
+ * @author     Jim Wigginton <terrafrost@php.net>
+ * @copyright  MMVII Jim Wigginton
+ * @license    http://www.gnu.org/licenses/lgpl.txt
+ * @version    $Id: Random.php,v 1.4 2008/05/21 05:15:32 terrafrost Exp $
+ * @link       http://phpseclib.sourceforge.net
+ */
+
+/**
+ * Generate a random value.  Feel free to replace this function with a cryptographically secure PRNG.
+ *
+ * @param optional Integer $min
+ * @param optional Integer $max
+ * @param optional String $randomness_path
+ * @return Integer
+ * @access public
+ */
+function crypt_random($min = 0, $max = 0x7FFFFFFF, $randomness_path = '/dev/urandom')
+{
+    static $seeded = false;
+
+    if (!$seeded) {
+        $seeded = true;
+        if (file_exists($randomness_path)) {
+            $fp = fopen($randomness_path, 'r');
+            $temp = unpack('Nint', fread($fp, 4));
+            mt_srand($temp['int']);
+            fclose($fp);
+        } else {
+            list($sec, $usec) = explode(' ', microtime());
+            mt_srand((float) $sec + ((float) $usec * 100000));
+        }
+    }
+
+    return mt_rand($min, $max);
+}
+?>